AR15.Com Archives
 Bushmaster 7.62x39 carbine
klw  [Member]
8/7/2010 1:14:46 AM
I thought that there were problems putting the 7.62x39 round into a AR-15 frame. Something about the bolts breaking and the magazines not working with a capacity much above 5 or 10 rounds. Have those problems been solved here? Also can this gun use a standard AK-47 magazine?
TylerM_8  [Team Member]
8/7/2010 1:58:20 AM
Originally Posted By klw:
I thought that there were problems putting the 7.62x39 round into a AR-15 frame. Something about the bolts breaking and the magazines not working with a capacity much above 5 or 10 rounds. Have those problems been solved here? Also can this gun use a standard AK-47 magazine?


If it is built for 7.62x39 then it should work just fine. This Bushmaster page states a magazine capacity of 26 rounds.

Copied from that link:
"Due to the "fatter" case diameter, magazine capacity is reduced to 26 Rounds, and 7.62.x39 specific springs and followers are used in the AK-curved steel magazine. The bolt is also different - due again to case diameter (take care not to interchange a 5.56mm/.223 bolt with a 7.62x39mm bolt)."

You shouldn't have a problem. There are bigger calibers out there that AR's have been chambered in. They don't take a 5.56 AR and try to shove a bigger round into it. They build parts with whole new dimensions to accommodate the different caliber all based off of the AR design.

You won't be able to use a standard AK47 magazine. You will have to use 7.62x39 AR style magazines.
Couch-Commando  [Team Member]
8/7/2010 2:20:30 AM
My "first rifle" growing up was a 7.62x39 colt. I assure you they work. The issue then was mags, which seems to have been solved by Cproducts as of late.
klw  [Member]
8/8/2010 8:12:00 PM
If they were going to go to all this trouble, why not make the gun so it could use standard AK-47 magazines unaltered?
MMcfpd  [Life Member]
8/8/2010 8:56:33 PM
There are 7.62x39 ARs out there that use AK mags but there's no need to pursue those obscure lowers when you can use any standard lower with C Products or frankenmags and a 7.62x39 upper from Bushmaster, AR Performance, Model 1, J&T or DPMS, and probably others.
tacman556  [Member]
8/8/2010 9:42:05 PM
Originally Posted By klw:
If they were going to go to all this trouble, why not make the gun so it could use standard AK-47 magazines unaltered?



The AK mag rocks into place like an M14 or Mini 14 mag. The AR mag is inserted straight upward into the rifle. The AR mag locks into the left side of the mag. The AK mag locks into the front and back of the mag. Also the AK mag is curved throughout its entire length. The AR mag starts off straight and then only curves in the lower half of the mag. The AK does not have a deep mag well like the AR does. I just don't see how the AK mag could work in the AR platform without some serious modifications.
Foxnews_FTW  [Team Member]
8/8/2010 10:10:36 PM
Originally Posted By tacman556:
Originally Posted By klw:
If they were going to go to all this trouble, why not make the gun so it could use standard AK-47 magazines unaltered?



The AK mag rocks into place like an M14 or Mini 14 mag. The AR mag is inserted straight upward into the rifle. The AR mag locks into the left side of the mag. The AK mag locks into the front and back of the mag. Also the AK mag is curved throughout its entire length. The AR mag starts off straight and then only curves in the lower half of the mag. The AK does not have a deep mag well like the AR does. I just don't see how the AK mag could work in the AR platform without some serious modifications.


I think I've seen a dedicated AK mag AR lower or so floating around there, and for those looking for a 7.62x39 AR? It might* be worth looking into
balloo93  [Team Member]
8/9/2010 7:14:24 AM
Originally Posted By Foxnews_FTW:
Originally Posted By tacman556:
Originally Posted By klw:
If they were going to go to all this trouble, why not make the gun so it could use standard AK-47 magazines unaltered?



The AK mag rocks into place like an M14 or Mini 14 mag. The AR mag is inserted straight upward into the rifle. The AR mag locks into the left side of the mag. The AK mag locks into the front and back of the mag. Also the AK mag is curved throughout its entire length. The AR mag starts off straight and then only curves in the lower half of the mag. The AK does not have a deep mag well like the AR does. I just don't see how the AK mag could work in the AR platform without some serious modifications.


I think I've seen a dedicated AK mag AR lower or so floating around there, and for those looking for a 7.62x39 AR? It might* be worth looking into


MGI makes the modular lower than can be used with various magazines depending on the mag adapter used on the receiver. I'd love to have one, but they are a quite expensive. Here's a used example that went for $1400

MGI Hydra
Foxnews_FTW  [Team Member]
8/9/2010 6:57:34 PM
Originally Posted By balloo93:
Originally Posted By Foxnews_FTW:
Originally Posted By tacman556:
Originally Posted By klw:
If they were going to go to all this trouble, why not make the gun so it could use standard AK-47 magazines unaltered?



The AK mag rocks into place like an M14 or Mini 14 mag. The AR mag is inserted straight upward into the rifle. The AR mag locks into the left side of the mag. The AK mag locks into the front and back of the mag. Also the AK mag is curved throughout its entire length. The AR mag starts off straight and then only curves in the lower half of the mag. The AK does not have a deep mag well like the AR does. I just don't see how the AK mag could work in the AR platform without some serious modifications.


I think I've seen a dedicated AK mag AR lower or so floating around there, and for those looking for a 7.62x39 AR? It might* be worth looking into


MGI makes the modular lower than can be used with various magazines depending on the mag adapter used on the receiver. I'd love to have one, but they are a quite expensive. Here's a used example that went for $1400

MGI Hydra


A pic for the curious:

klw  [Member]
8/9/2010 7:41:17 PM
Has Bushmaster started shipping these carbines yet? I check with a distributor and they hadn't seen any yet.
1saxman  [Member]
8/9/2010 8:08:07 PM
Originally Posted By klw:
Has Bushmaster started shipping these carbines yet? I check with a distributor and they hadn't seen any yet.


Yet? I think they have been making them for 20 years.

wildearp  [Team Member]
8/9/2010 8:10:06 PM
FYI, you can get one from DPMS. I found several Colt uppers on the EE when I really didn't need one. After seeing them so many times, I bought one.

Start shopping, OP!

I have a bunch of C-products mags that run well. I suggest ordering them from 44mag dot com. I also have some DPMS frankenmags that I will probably be burried with.
klw  [Member]
8/12/2010 7:20:11 PM
Originally Posted By klw:
I thought that there were problems putting the 7.62x39 round into a AR-15 frame. Something about the bolts breaking and the magazines not working with a capacity much above 5 or 10 rounds. Have those problems been solved here? Also can this gun use a standard AK-47 magazine?


Distributors expect to start receiving these in 4 to 6 weeks though not all distributors are ordering them.

shadowcop  [Team Member]
8/12/2010 8:25:03 PM
You can buy a Model 1 7.62 x 39 upper - BCG for less than $400.
You can also build your own. Del-ton has great prices on barrels and BCG's. That's what I'm looking at.
An7oine  [Member]
8/12/2010 10:16:02 PM
Originally Posted By 1saxman:
Originally Posted By klw:
Has Bushmaster started shipping these carbines yet? I check with a distributor and they hadn't seen any yet.


Yet? I think they have been making them for 20 years.



RIF.
An7oine  [Member]
8/12/2010 10:17:34 PM
The AR-47 is also a AK mag dedicated weapon.

http://www.ar-47.com/
par3  [Member]
8/12/2010 10:21:57 PM
You can buy a Model 1 7.62 x 39 upper - BCG for less than $400.

Ha ha ... wait and see what the cost is after unauthorized cc charges.
TANGOCHASER  [Team Member]
8/15/2010 4:30:10 AM
Originally Posted By klw:
Has Bushmaster started shipping these carbines yet? I check with a distributor and they hadn't seen any yet.


Posted by 1saxman:
Yet? I think they have been making them for 20 years.


That's news to me. I have Bushmaster catalogs dating back to the 80's with no mention of a 7.62x39. Colt has been selling them since the 80's but not BM. At one time, BM even said they were not going to pursue other calibers than .223/5.56. I guess they finally read the market right.
MMcfpd  [Life Member]
8/15/2010 8:43:07 AM
Bushmaster came out with their 7.62x39 AR about a year ago; I received my barrel assembly from them late last year (2009).

With the various magazines (5, 10, 20 and 30 round capacities) you can get that work in standard lowers I can't easily see why you'd want to fool with a dedicated lower that takes AK mags.

If you poke around the 7.62x39 threads you'll see that Model 1's barrels do quite well in this application.
TANGOCHASER  [Team Member]
8/15/2010 6:04:08 PM
I have a franken gun with a Model 1 Sales barrel and I use USA franken mags. Runs like a raped ape.